import json
import yaml
from pathlib import Path
from typing import List, Dict, Any

_FILE_PATH = Path(__file__).parents[2]
DATA_DIR = Path(__file__).parents[2] / "data"
MEETINGS_FILE = DATA_DIR / "fed_processed_meetings.json"

def load_meetings_data() -> List[Dict[str, Any]]:
    """Load processed meetings data from JSON file"""
    try:
        if MEETINGS_FILE.exists():
            with open(MEETINGS_FILE, 'r', encoding='utf-8') as f:
                data = json.load(f)
            return sorted(data, key=lambda x: x.get('date', ''), reverse=True)
        else:
            return []
    except Exception as e:
        print(f"Error loading meetings data: {e}")
        return []

def create_meeting_list(meeting_data: list) -> list[dict]:
    return [
        {
            "date": meeting.get("date", ""),
            "title": meeting.get("title", ""),
            "rate_decision": meeting.get("rate", ""),
            "summary": meeting.get("forward_guidance", ""),  # Show full text
            "action": meeting.get("action", ""),
            "magnitude": meeting.get("magnitude", ""),
            "key_economic_factors": meeting.get("key_economic_factors", []),
            "economic_outlook": meeting.get("economic_outlook", ""),
            "market_impact": meeting.get("market_impact", ""),
            "full_text": meeting.get("full_text", "")[:500] + "..." if meeting.get("full_text") else "",
            "url": meeting.get("url", "")
        }
        for meeting in meeting_data
    ]

def load_processed_meetings():
    """Load processed FOMC meetings from JSON file"""
    try:
        data = load_meetings_data()
        return create_meeting_list(meeting_data=data)
    except FileNotFoundError:
        print("Fed processed meetings file not found. Using fallback data.")
        return [
            {
                "date": "2025-06-18",
                "title": "FOMC Meeting 2025-06-18",
                "rate_decision": "4.25%-4.50%",
                "summary": "No processed data available. Please run the data pipeline first.",
                "action": "Unknown",
                "magnitude": "Unknown",
                "key_economic_factors": [],
                "economic_outlook": "Data not available",
                "market_impact": "Data not available",
                "full_text": "No data available",
                "url": ""
            }
        ]
    except Exception as e:
        print(f"Error loading processed meetings: {e}")
        return []


def load_prompt_library():
    """Load prompts from the YAML library"""
    try:
        prompt_file = _FILE_PATH / "configs" / "prompt_library.yaml"
        with open(prompt_file, 'r', encoding='utf-8') as f:
            return yaml.safe_load(f)
    except Exception as e:
        print(f"Error loading prompt library: {e}")
        return {}